36 struct rsp {  struct
37 	char	rsp_typ;	/* Packet type */  argument
38 	char	rsp_sz;		/* Packet size */  argument
39 	char	rsp_op;		/* Operation */  argument
40 	char	rsp_mod;	/* Modifier */  argument
41 	char	rsp_drv;	/* Tape drive number */  argument
42 	char	rsp_sw;		/* Switches */  argument
43 	char	rsp_xx1;	/* Unused, always zero */  argument
44 	char	rsp_xx2;	/* Unused, always zero */  argument
45 	short	rsp_cnt;	/* Byte count to transfer */  argument
46 	short	rsp_blk;	/* Block number */  argument
47 	short	rsp_sum;	/* Checksum of packet */  argument